Player is a pokemon trainer who comes back to his small home town and finds out that an epidemic has gone around that have made all of the towns people sick. Hopefully after the mockup things will become more clear. I'm sorry if you don't get the whole image of the game. There will be a main character and you follow him through obstacles, somewhat similar to traditional Pokemon games and then mix it with the tower defense aspect. So before I get into more detail, this game isn't going to be played like a traditional tower defense. I'm going to put together a little flash mockup of the game play later this week. I'm glad to hear there are some of you who are interested :]. If anyone would like to help with graphics and/or storyline that would be great too! I have some background in AS3 but I don't think it'll be enough to build this game. I can do most of the art work but I would need lots of help with coding.
I suggest that you make distribute it to major Flash game sites like Addicting games People are not going to download a tower defense game unless its full on like the Monsters game for PS3 or the Savage Moon for the ps3. How are you going to develop it in? I suggest flash, its the most common form of tower defense games.